i also had the trouble before, people nowadays always wants immediate results, though they already know that some personalities already invested in bitcoin like the rotchschilds for example, they are considered one of the richest, most influential and powerful banking family, and yet they still invested in bitcoins and not just a percentage, they bought a lot a few months ago, since they know what they will be missing out, just like mark cuban, he even created his own crypto coin. for me, i a already explained it to them and they are not yet convinced that bitcoin is the future and fiat money will just be a thing of the past, i respect their decision, since bitcoin is a high risk investment, if i forcefully convinced them to invest in bitcoin and they do not know what investing is and how to deal with the market, they might blame me, since the mentality of most people today is having easy money, however if they are convinced already after 2 tries, i'll be more than willing to help them out.
yes you are right convincing people about bitcoin is really difficult because they will believe when they know the truth and see that thing with their own eyes so just i mean that people don't have knowledge about bitcoin thats why they don't invest and like bitcoin.